Gluten Free Apple Date Coffee Cake

• butter, unsalted, to grease

All-Purpose Gluten Free Flour

• 200 g quinoa, white
• 100 g chia seeds
• 300 g cornstarch

Streusel

• 115 g brown sugar
• 2 tbsp butter, unsalted
• 1 tsp cinnamon, ground
• ¼ tsp salt
• 1 pinch ginger, dried, ground
• 1 pinch nutmeg, ground
• 30 g pecan nuts, chopped, (optional)

Cake

• 85 g dried dates, pitted
• 225 g apples, quartered
• 170 g plain yogurt, unsweetened
• 60 g vegetable oil
• 85 g brown sugar
• 1 tsp vanilla extract, natural
• 2 eggs, large
• ½ tsp xanthan gum
• 1 tsp baking powder
• ½ tsp baking soda
• ½ tsp salt
• 1 pinch nutmeg, ground